SYSTEM FOR MEASURING BODY ENERGY EXPENDITURE IN EXTREME CONDITIONS Russian patent published in 2019 - IPC A61B5/08 G01N33/497 

FIELD: physics.

SUBSTANCE: disclosed system for sampling exhaled air for monitoring energy expenditure of the human body involves solving several tasks: a) development of a system for measuring energy expenditure of an organism in extreme conditions, which does not require dependence on energy sources, b) research dynamism, allowing in the monitoring mode to take air samples at short intervals with frequent change of short-term activities in extreme conditions; c) delivering a plurality of air samples to single gas composition evaluation centres and determining energy costs remote from the stationary and mobile measurement stations; d) low respiratory resistance (not more than 30 mm W.) and reduced error in assessing pulmonary ventilation due to low-inertia volumes and using two lightweight (up to 100 g) bags of dense tissue with volume of 5 l each - analogues of respiratory bags of portable respiratory bags previously used on the Navy (PDU-1 and PDU-2); e) reducing volume characteristics and weight of the sampling system, which enables to conduct studies in small-size autonomous objects and rooms and reduces error due to weight characteristics; taking into account all necessary corrections and coefficients (pressure, temperature, humidity), having effect on final values of gas exchange and energy expenditures; e) possibility of monitoring (reusable sampling) of energy expenditure dynamics without taking off the proposed system from the test and taking air sampling to special chambers, which enables to more objectively reflect or simulate actual loads in certain types of professional activity under extreme conditions; g) possibility of system assembly from elements of existing instruments and measuring devices; h) enlarging and increasing objectivity of methodological base.

EFFECT: invention relates to systems for dynamic monitoring (or monitoring) of gaseous media and to devices for non-invasive monitoring of energy metabolism in conditions of excessive or differently directed physical, psychological and stress loads for a long period of time.

1 cl, 1 dwg